A reversible Cu+/Cu2+ cycling strategy is developed to enhance the extraction of photoexcited electrons. Cu-doped BiVO4 with an adjustable Cu+/Cu2+ ratio is selected as the prototype. The charge separation efficiency is improved by 25.6%, with the NH4+ generation rate reaching six times that of the pristine sample.
W. Shao, Y. Yang, Y. Shen, C. Zhang, Y. Wang, Y. Hu, Y. Wu, J. Hu, J. Zhu, H. Guan, X. Zu, X. Li and X. Jiao, Chem. Commun., 2026, Accepted Manuscript , DOI: 10.1039/D6CC01839D
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